Answer:
Step-by-step explanation:
Rational numbers are simply numbers that can be written as fractions or ratios.
To write the decimal number 0.83333333 as a rational number you must:
- Multiply and divide by 10 for every number after the decimal point.
- Since the decimal part contains 8 digits (to the right of the decimal point), we need to multiply our number by to obtain the rational number.
Answer: We will not accept the null hypothesis.
Step-by-step explanation:
Since we have given that
sample size n = 1068
= 48% = 0.48
At 0.01 level of significance, z = - 2.58
Hypothesis are:
So, test statistic value would be:
So, test statistic > critical value.
Hence, we will not accept the null hypothesis.
Answer:
never learned it sssssooooooorrrrrrrryyyyyyy!!
Step-by-step explanation:
Answer: b
Step-by-step explanation:
Answer:
There are 65,7 ml of acid.
Step-by-step explanation:
This is a percent problem. When we have a total (in this case 371 ml of a solution), it's value is the 100%. As only 17,7% is only the part we are interested in (acid), we shall get a cross-multiplication like this one:
371 ml ----------- 100%
x= ------------17.7%
This must be resolved multiplying 17.7 x 371 and dividing the result by 100.
This number rounded to the nearest tenth is 65,7.